e given by the type-declaration portion of the declaration.
(48)typeid
typeid is used to get the Type for a type at compile time.
(49)typename
Tells the compiler that an unknown identifier is a type.Use this keyword only in template definitions.
(50)union
ÉùÃ÷ÁªºÏÊý¾ÝÀàÐÍ.A union is a user-defined data or class type that, at any given time, contains only one object from its list of members (although that object can be an array or a class type).
(51)using
The using declaration introduces a name into the declarative region in which the using declaration appears.
(52)virtual
ÉùÃ÷Ðé»ùÀà»òÐ麯Êý.The virtual keyword declares a virtual function or a virtual base class.
(53)void
ÉùÃ÷º¯ÊýÎÞ·µ»ØÖµ»òÎÞ²ÎÊý£¬ÉùÃ÷ÎÞÀàÐÍÖ¸Õë.
When used as a function return type, the void keyword specifies that the function does not return a value. When used for a function¡¯s parameter list, void specifies that the function takes no parameters. When used in the declaration of a pointer, void specifies that the pointer is ¡°universal.¡±
(54)volatile
˵Ã÷±äÁ¿ÔÚ³ÌÐòÖ´ÐÐÖпɱ»Òþº¬µØ¸Ä±ä,±íÃ÷ij¸ö±äÁ¿µÄÖµ¿ÉÄÜÔÚÍⲿ±»¸Ä±ä£¬ÓÅ»¯Æ÷ÔÚÓõ½Õâ¸ö±äÁ¿Ê±±ØÐëÿ´Î¶¼Ð¡ÐĵØÖØжÁÈ¡Õâ¸ö±äÁ¿µÄÖµ£¬¶ø²»ÊÇʹÓñ£´æÔڼĴæÆ÷ÀïµÄ±¸·Ý¡£The volatile keyword is a type qualifier used to declare that an object can be modified in the program by something such as the operating system, the hardware, or a concurrently executing thread.
(55)wchar_t
¿í×Ö.
(56)while
Ñ»·Óï¾äµÄÑ»·Ìõ¼þ